Automobile jack



Nov. 22, 1927.

R. F. JOHNSON AUTOMOBILE JACK Filed NOV. 10. 1926 fra/@7112??? wheel and so constructed and arranged as t0 `out of its normal Patented Nov. 22, 1927.

RIGHARD F. `J'OHNSQN, 0F 'SAN ANTONIO, fTEXA-S.

AUToMoBLE JACK .Appncanon mea november 1o,- 19'26, seriai No.j147,422.

This invention relates to means for facilitating the removal A,and replacement of tires on vehicle wheels, Vand its vprir'nzipal object' is toprovide improved means Iin the :forni-Of a li'ftingzjaclr having vlifting means capable of engagement with 'the hub. 0f a vehicle permit the tire .and its mounting' to Vbe, detached from thefelloe or'hub vof the wheel while .the lifting means is in supportingenga gement with the hub.

It .is -welllrnown that the `task of placing a jack under .either axle of an automobile or other motor vehicle is irlrsome, tedious and unpleasant and that one is lapt to 1get Yhis clothessoiled, whileplacing, the jack'in suc-h lifting position.

invention vis .to dispense the necessity of placing vthe lifting jack underneath the car, y* y "hasia hub engaging member-or rest 17 adsecured thereon. jAs. usual, means v whereby the objectionablevfeatures of using .the :ordinary lifting vvvjack are eliminated. Another object is to pro-vide means,'includ Ving a lifting jack .of .novel @construction which is applied to the ywheellhub for the purpose of .lifting it, .in connection Withflan auxiliary support which-may ,-beapplied n- Aderneath the wheel .felloe, the hub, brake `drum or: .other .convenient 4kplace to temporarily .support the corner of `thevehicle from which the tire-'is to be removed.

Ther yinvention `,consists therefore, inmeains f for facilitating the removalandreplacement .of tires, demounta-ble Ywheels `or .disc Awheels with their tires, and having wheel'flifting means engageable with thelhiib' of the "wheel, and ..a.standard, .of a .form enabling 'the tire, .or other demountable .element te 'be v`partly detached .from thefelloe, or `hub moved plane, whereby .an auxiliary .support may 'Y rsupport .that corner of :the vehicle .from whichV the tire or yotherdemountable partiis to be disconnected fromlthe vehicle. .Itfur- Vther consists inthe several" novel Yfeatures hereinafter fully set forthand claimed.

lThe invention is .clearly illustrated in the4 accompanying drawing, `in which:

Fig. 1 is a side elevation .of theV device showing' its application` .to .a vehicle'wheel from which the tireisrto be removed; Fig. Q is a view similar to Fig. l but showingy the wheel in raised position with its tire fpartly detached therefrom .andthe Vauxiliary port .in place to support the ycorner of the vehicle from which the .tire Iist() ,vibe removed; Fig. 3 is :an end yelevation of the .reference character 5 `mobile wheel having Une of thebbjects ofthis Vju'stably arefprovided in lowering the bar '16,

n a frest 18 may uiting ber i6 be placed 4in position .to y the ZOO i elevadevice geen in rag. i; riga is afsiae' tion of the auxiliary support/,and Fi ai cross section takenion linee-5 of `ig. 1.

Referring to said drawing, Whichfillustrates one embodiment of the invention, the

designates an autov the hub 6, spdkes "7, felloe' and the tire19 and its mounting, por rim 10. `I

In its present `form `the invention Aeinbodies a lifting ack 11 of Ynovel Vtmllstrueticm vand an auxiliary supportingevice A12. The lifting jack comprises a standard 13 which rises from .a base 14, which ispreferably VrectangularV in form, and iatbn itsbtftom. ',The standard 13' rises from one end orfjthe base 14 and its upper end is yin theformcf a housing 15 in which isyslidablyguided a verticallymovable lifting bar`16, which the housing fory raising .and but inasmuch as` such meansl are common andy Well'knOWD theywill not'be Adescfribedfin detail. yAfhandle Socket nieans',finto"which is placed a handle'ffnot shown) by which the li'ftingihechanism is actuated. -On the top lof `.the vlifting bar .16

be provided whereby ythe device 'be y used as an' ordinary ,jack figer anyfliftinglpurp'ose. Y

The hub rest .'17, Zin the form shown, has

an'armgle which engages' with any one of a u number o'f'teethm which are formed ena/he ,and it lso has two'ar'fmS 21 "that-engage'with ribsj22 on thelifting bar 116., The huh` res'tmay be desired [position on the lifting bar .16 `by r adjusted to any Swingin' thel arm 19 outofengagement with ing andy lowering 'the hub rest to thede'sired andgiven an 'arcuate form, .and the depress. d Aportion is faced with 4a kfacing 23 with' which it is engaged ,and raissoY V41 7a is included in Such raisingandlowering Y place and letting the arm 19 re-engag'ean 'adjacent tooth. Y

.To enable y'the vehicle wheel to be ,rctated while being supportediby the 'lifting jack, the `upper face'of the hub rest .is depressed ingimpregnated withgrease or other lubricant or anti-friction substance, the purpose of which is .to render thehub rest smooth whereby the wheel, when resting .ithereon l maybe turned or ,rotated tol bri-ng `*the valve of the tire into an uppermost position, which is the proper position for it to occupy while removing a tire from the wheel. The facing 23 is usually riveted to the hub rest but .i may be secured thereto in any desirable man- *the wheel. The hub rest is placed directlyv above the base plate whereby there will be no tendencyvfor the vehicle to tilt the lifting jack when its weight is borne thereby.

The auxiliary supporting member 12 may be in any convenient form `and as shown comprises a hollow base member 25 in which is adjustably supported a post 26 having on its upper end, an arcuate rest 27. The adjustable feature may be provided by forming teeth 28 in thepost 26 which engage with a pin 29 secured in the hollow base member. By partially rotating` the post, the teeth can be disconnected from the pin and it may then be raised or lowered and turned back to bring another tooth into engagement with the pin 29.

' In using the device for 'changing a tire, the lifting jackis placed at the outerside of the wheel with the hub rest underneath the wheel hub andthe hub rest adjusted vertically so as to bring it as close to theV underside of theV hub as can be done conveniently. The handle of the jack is then manipulated until thewheel has been raised sufhciently to clear the ground or other supporting surface upon which it has been standing. The fasten ing means for the tire rim are then disconnected andthe wheel turned around until the tire lower part of the tire is then swung into the space 24 underneath the lifting bar 16, in

which position it is suspended by the top of the felloe, and the auxiliary supporting member 12 is then inserted underneath the felloe, or brake drum, or other convenient place. As a preference the auxiliary support should be adjusted to such a length that it will support the corner of the vehicle from which the tire is to be removed,when that corner of the vehicle tached from the felloe. A. substitute tire andy valve is located at the top of the wheel. The

rim are then placed on the felloe with the tire valve in the hole therefor in the felloe and the lower part of the tire and rim at one side of the auxiliary supporting member. The lifting jack is again brought into play,

f the hub rest placedunder the wheel hub in its raised position, the jack manipulated to take the load froml the auxiliary supporting member, the latter removed, and the tire and rim placed around the felloeand fastened in place, whereupon the lifting jack may be removed. l/Vhen used for removing tires from y disc wheels, the operation is the same, ex-

cept that the auxiliary support is placed under an associated part of the wheel, fromA Awhich the disc is removed, or it may be placed under the brake drum, axle or other accessiblepart. From the above it isv quite evident that a tire and its mounting may be removed from and replaced on a wheel felloe, without the necessityof placing a jack underneath the bodyof an automobile; that the work of changing tires'is simplified and is not attended with the usual danger of soi-ling ones clothes. The device has been found to be particularly serviceable in connection with low pressure tires, commonly called balloon tires, but its use is not limited thereto. Moreover the jack may be used as an ordinary jack wherever lifting of a heavy object is necessary.

. More or less variation of the exact details of construction is possible without departing from the spirit of this invention; I desire, therefore, not to limit myself to the exact form of the construction shown and described, but intend', in the following claims, to point out all of the invention disclosed herein.

I claim as new, and desire to v'secure by Letters Patent:

1. Means for facilitating the removal of Vand replacement of tires on vehicle wheels,

comprising a lifting jack, formedwith a base plate and a standard extending up therefrom andI having a housing at its upper end, a vertically movable lifting'bar slidably guided in said housing, a hub rest carried by said bar, and bar lifting mechanism, the of said standard being spaced entirely behind said .bar, andV there being suicient clearance space below and behind said bar, when raised, to receive the tire of a wheel supported by said hub rest.

2. Means for facilitating the removal of and replacement oftires on vehicle wheels,

comprising a lifting jack, formed with'a base plate anda standard extending up'therefrom and having a housing at its upper end, a vertically movablelifting bar slidably guided in said housing, a vertically adj ustable'hub rest carried ,by said bar, and bar lifting mechanism, the lower portion of said standard being spaced entirely behind said bar, and there being suiicient clearance space below Cil lower portion and behind said bar, when raised, to receive the tire of a Wheel supported by said hub rest.

3. Means for facilitating and replacement of tires on vehicle Wheels, comprising a lifting jack, formed with a base plate and therefrom and having a housing at its upper end, a vertically movable lifting bar slidably guided in said housing, a hub rest carried by said bar, and bar lifting mechanism, the lower portion of said standard being arched backwardly and spaced entirely behind said bar, and there being sufficient clearance space below and behind said bar, when raised, to receive the tire of a Wheel supported by said hub rest.

4. Means for facilitating the removal of and replacement of tires or vehicle Wheels,`

comprising a lifting jack, formed with a base plate and a standard extending up therefrom and having a housing at its upper end, a

the removal of a standard extending up Y comprising a lifting ack, having vertically movable lifting bar slidably guided in said housing, a hub rest carried by said bar, and bar lifting mechanism, the lower portion of said standard being archedl back- Wardly to receive the tire of a Wheel When raised and supported by said hub rest.

5. Means for facilitating the removal of and replacement of tires on vehicle Wheels, a standard, a vertically movable hub rest, and lever` operated means mounted on the standard -for raising the hub rest, the lower portion of said standard being spaced sufticiently'behind the clearance space for rehub rest to providey ceiving the tire of a Wheel When raised and supported by said hub rest, and a vertically adjustable auxiliary support engageable with the felloe of the Wheel When the tire has been moved into the clearance space ofv the lifting jack.

. RICHARD F. JOHNSON.y 

